CN104178240B - Utilize high ferro to give up and admittedly prepare the method for coal combustion catalyst - Google Patents
Utilize high ferro to give up and admittedly prepare the method for coal combustion catalyst Download PDFInfo
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- CN104178240B CN104178240B CN201410393413.0A CN201410393413A CN104178240B CN 104178240 B CN104178240 B CN 104178240B CN 201410393413 A CN201410393413 A CN 201410393413A CN 104178240 B CN104178240 B CN 104178240B
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Abstract
The invention discloses and a kind ofly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, belong to coal combustion catalyst preparation field, it comprises useless for the high ferro of iron-holder >=20% solid, be prepared into after fine grinding screening and grind granularity≤100 μm, the modification of recycling calcium-based slurries, calcium-based slurries concentration used is 20 ~ 50%, and mixed calcium-based modifying agents charge capacity is 0 ~ 15%; Time through being not less than 1h carries out modification, after completing, the high ferro solid waste of mixing and calcium-based modifying agents are dewatered, after dehydration, mixture water content is 30 ~ 70%, the mixture after dehydration through flow velocity be 1 ~ 10m/s, temperature is that the air-flow of 80 ~ 150 DEG C carries out drying and makes finished catalyst.Compared with prior art, it can utilize calcium base slurry modification high ferro solid waste, and utilize airflow pulverization to be dried dispersion, solid particulate spheroidal graphite technology realizes the tight load of catalyzer and coal dust, realizes useless the consolidating of high ferro use as coal dust catalyzer using this.
Description
Technical field
The invention belongs to coal combustion catalyst preparation field, specifically, particularly relate to and a kind ofly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst.
Background technology
Iron and steel enterprise can produce in process of production and comprise slag, converter dust, sintering dust and various electro-precipitating dust, rotary hearth furnace dirt mud and lime-roasting powder etc., these solid wastes have that dust granules is many, particle is tiny, and can heavy metal ion be contained, easy formation haze and polluted underground water, a large amount of iron and steel solid wastes is piled up to reclaim the valuable elements such as iron, potassium, zinc, titanium, vanadium by some enterprise, not only takies a large amount of land resources but also waste valuable resource.
And these tiny Dust From Steel Industries containing iron, potassium, zinc, titanium, vanadium etc. have the little feature of granularity, the tight load that can realize metallurgical dust and coal dust by solid particulate ball milling load technology uses it can be used as coal combustion catalyst.
Summary of the invention
The object of the present invention is to provide and a kind ofly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it can utilize calcium base slurry modification high ferro solid waste, airflow pulverization is utilized to be dried dispersion, realized the tight load of catalyzer and coal dust by solid particulate ball grinding technique, realize useless the consolidating of high ferro using this and use as coal dust catalyzer.
The present invention is achieved by the following technical solutions:
A kind of described in the present invention utilizes high ferro to give up admittedly to prepare the method for coal combustion catalyst, and by useless for the high ferro of iron-holder>=20% solid, be prepared into after fine grinding screening and grind granularity and be less than or equal to 100 μm, recycling calcium-based slurries is carbide slag or Ca (OH)
2or CaO or CaCO
3the calcium-based slurries modification be configured to, the concentration of calcium-based slurries used is 20 ~ 50%, and mixed calcium base charge capacity is 0 ~ 15%; Time through being not less than 1h carries out modification, modification temperature is 70 ~ 80 DEG C, after completing, by the high ferro of mixing, useless solid and calcium-based slurries dewaters, after dehydration, mixture water content is 30 ~ 70%, the mixture after dehydration through flow velocity be 1 ~ 10m/s, temperature is that the air-flow of 80 ~ 150 DEG C carries out drying and makes finished catalyst.
Say further, the calcium-based slurries concentration described in the present invention is 20 ~ 30%.
Say further, the mixed calcium base duty ratio described in the present invention is 5 ~ 8%.
Say further, after the dehydration described in the present invention, mixture water content is 30 ~ 50%.
Say further, it is 4 ~ 6m/s that the air-flow described in the present invention carries out dry flow velocity, and temperature is 100 ~ 120 DEG C.
Say further, the high ferro described in the present invention is useless solid to be ground into and grinds granularity and be less than 50 μm after fine grinding screening.
Say further, the high ferro described in the present invention is useless solid for sintering dust, converter dust, bessemer furnace slag.
Compared with prior art, the utility model has following beneficial effect:
The present invention can realize high ferro and to give up solid recycling, iron and steel enterprise self is dissolved the dust of the elements such as certain iron content, potassium, calcium, magnesium, and the compactness of the coal combustion catalyst Load Balanced made and pulverized coal particle is good, can make coal dust Thorough combustion.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment 1: converter dust sieves through fine grinding, utilizes the Ca (OH) of 20%
2, modification temperature is 70 DEG C, and modification time is 1 hour, water content 30% after filter dehydration, and at 100 DEG C, gas speed is dry dispersion under the air-flow of 4m/s, and grain graininess is less than 50 μm.
Embodiment 2: converter dust sieves through fine grinding, utilizes the carbide slag of 20%, and modification temperature is 80 DEG C, and modification time is 1 hour, water content 40% after filter dehydration, and at 110 DEG C, gas speed is dry dispersion under the air-flow of 4m/s, and grain graininess is less than 60 μm.
Embodiment 3: high ferro converter slag sieves through fine grinding, utilizes the Ca (OH) of 20%
2, modification temperature is 70 DEG C, and modification time is 1 hour, water content 50% after filter dehydration, and at 100 DEG C, gas speed is dry dispersion under the air-flow of 6m/s, and grain graininess is less than 60 μm.
Embodiment 4: high ferro converter slag sieves through fine grinding, utilizes the Ca (OH) of 20%
2, modification temperature is 80 DEG C, and modification time is 1 hour, water content 30% after filter dehydration, and at 100 DEG C, gas speed is dry dispersion under the air-flow of 4m/s, and grain graininess is less than 60 μm.
Embodiment 5: converter dust sieves through fine grinding, utilizes the CaCO of 20%
3, modification temperature is 70 DEG C, and modification time is 1 hour, water content 50% after filter dehydration, and at 120 DEG C, gas speed is dry dispersion under the air-flow of 7m/s, and grain graininess is less than 60 μm.
Embodiment 6: converter dust sieves through fine grinding, utilizes the CaO of 10%, and modification temperature is 80 DEG C, and modification time is 1 hour, water content 60% after filter dehydration, and at 110 DEG C, gas speed is dry dispersion under the air-flow of 4m/s, and grain graininess is less than 60 μm.
The high ferro solid waste of iron-holder >=20%, through calcium-based slurries modification, its calcium base charge capacity (alkaline earth metal content) is 0 ~ 15%, through being no less than the modification of hour, by the catalyzer of modified catalyzer through dehydration, air stream drying acquisition good dispersity, grain graininess is below 50 μm, utilize gas delivery equipment, by catalyst powder according to 1 ~ 3% ratio add in coal pulverizer, through grinding after a while, when coal particle size is less than 74 μm, the pulverized coal particle of supported catalyst enters into coal dust storage tank with air-flow.
Claims (7)
1. utilize high ferro to give up and admittedly prepare a method for coal combustion catalyst, it is characterized in that: the high ferro of iron-holder>=20% is useless solid, be prepared into after fine grinding screening and grind granularity and be less than or equal to 100 μm, recycling calcium-based slurries is carbide slag or Ca (OH)
2or CaO or CaCO
3the calcium-based slurries modification be configured to, the concentration of calcium-based slurries used is 20 ~ 50%, and mixed calcium base charge capacity is 0 ~ 15%; Time through being not less than 1h carries out modification, modification temperature is 70 ~ 80 DEG C, after completing, by the high ferro of mixing, useless solid and calcium-based slurries dewaters, after dehydration, mixture water content is 30 ~ 70%, the mixture after dehydration through flow velocity be 1 ~ 10m/s, temperature is that the air-flow of 80 ~ 150 DEG C carries out drying and makes finished catalyst.
2. according to claim 1ly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it is characterized in that: described calcium-based slurries concentration is 20 ~ 30%.
3. according to claim 1 and 2ly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it is characterized in that: described mixed calcium base charge capacity is 5 ~ 8%.
4. according to claim 3ly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it is characterized in that: after described dehydration, mixture water content is 30 ~ 50%.
5. according to claim 4ly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it is characterized in that: it is 4 ~ 6m/s that described air-flow carries out dry flow velocity, and temperature is 100 ~ 120 DEG C.
6. according to claim 5ly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it is characterized in that: useless solid the grinding into after fine grinding screening of described high ferro grinds granularity and be less than 50 μm.
7. according to claim 6ly utilize high ferro to give up admittedly to prepare the method for coal combustion catalyst, it is characterized in that: described high ferro useless solid be sintering dust, converter dust, bessemer furnace slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410393413.0A CN104178240B (en) | 2014-08-11 | 2014-08-11 | Utilize high ferro to give up and admittedly prepare the method for coal combustion catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410393413.0A CN104178240B (en) | 2014-08-11 | 2014-08-11 | Utilize high ferro to give up and admittedly prepare the method for coal combustion catalyst |
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| Publication Number | Publication Date |
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| CN104178240A CN104178240A (en) | 2014-12-03 |
| CN104178240B true CN104178240B (en) | 2015-08-12 |
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| CN201410393413.0A Expired - Fee Related CN104178240B (en) | 2014-08-11 | 2014-08-11 | Utilize high ferro to give up and admittedly prepare the method for coal combustion catalyst |
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| CN112755917A (en) * | 2020-12-29 | 2021-05-07 | 江苏省镔鑫钢铁集团有限公司 | Method for preparing coal-fired catalyst by utilizing high-iron waste solids and preparation equipment thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176041A (en) * | 1977-02-24 | 1979-11-27 | Kobe Steel, Ltd. | Method for reforming low grade coals |
| CN1334324A (en) * | 2001-07-02 | 2002-02-06 | 广州市粤首实业有限公司 | Efficient sulfur-fixating agent for fuel coal and its preparing process and application |
| CN102527392A (en) * | 2010-12-24 | 2012-07-04 | 新奥科技发展有限公司 | Ternary catalyst for catalytic coal gasification and preparation method thereof |
| CN103127938A (en) * | 2013-02-05 | 2013-06-05 | 华侨大学 | Preparation method of silicon-aluminum iron carbonyl composite catalysts with utilization of iron-bearing waste |
-
2014
- 2014-08-11 CN CN201410393413.0A patent/CN104178240B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176041A (en) * | 1977-02-24 | 1979-11-27 | Kobe Steel, Ltd. | Method for reforming low grade coals |
| CN1334324A (en) * | 2001-07-02 | 2002-02-06 | 广州市粤首实业有限公司 | Efficient sulfur-fixating agent for fuel coal and its preparing process and application |
| CN102527392A (en) * | 2010-12-24 | 2012-07-04 | 新奥科技发展有限公司 | Ternary catalyst for catalytic coal gasification and preparation method thereof |
| CN103127938A (en) * | 2013-02-05 | 2013-06-05 | 华侨大学 | Preparation method of silicon-aluminum iron carbonyl composite catalysts with utilization of iron-bearing waste |
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| CN104178240A (en) | 2014-12-03 |
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